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Marquise|Natural|GIA

0.50ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 1437394970

Certificate GIA 1437394970

Diamond specifications and retailer prices

From $738 NZD
$415 USD
As of October 31, 2026
Save $827 NZD (53%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,564 NZD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1437394970. Listed at 5 retailers as of October 31, 2026, with prices from $738 to $1,564, a $827 spread on the same certified stone. 77 Diamonds lists it at $1,564. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1437394970
Dimensions7.45 × 4.19 × 2.60 mm
L/W Ratio1.78
Girdle conditionFaceted
Key to symbols
Feather, Twinning Wisp
Top View
7.45 mm4.19 mm0.50 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1437394970
Side View
Table 65.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 61.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,564 NZD|Low: $670 NZD|High: $1,602 NZD|Avg: $1,247 NZD|+1.4%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2$738 NZD
Retailer 3$1,097 NZD
77 Diamonds$1,564 NZD
Retailer 4$1,602 NZD

29 data points across 4 retailers

5 retailers$738 NZD to $1,564 NZD

A
Cheapest Retailer
-
$738 NZD
$415 USD
Final sale: no returns
B+
Retailer 2
-
$1,004 NZD
$565 USD
View
B+
Retailer 3
-
$1,097 NZD
$617 USD
View
B
Retailer 4
-
$1,266 NZD
$713 USD
View
Most Expensive
B
77 Diamonds
MQMBMNHYFSDE · Nov 2
$1,564 NZD
£693 GBP
View
4 more retailers have this diamond
Prices start from $738 NZDSave up to $827 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.50ct Marquise
$738 NZD